Hi there, sorry for the delay.
After reviewing everything available to me at this time, I've decided that this ban was justified.
Do keep in mind in future that there is always escalation needed for things, and escalation does not include your antag buddy being kidnapped. As the ban was only for three days, there is no further action needed as the ban is already over. Also keep in mind your knowledge of OOC (Out of character) knowledge in IC (in character) situations.
If there are no further issues, I will lock and archive this in twenty four hours.